The hydrogen ion concentration of a solution is 2.5 × 10-6 mol/L [H+]. What is the pH of this solution?
A. -6
B. 5.6
C. 2.5
D. 6
Answer: B
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Set up the general equation from the given statement.The power P required to propel a ship varies as the cube of the speed s.
A. P = 
B. P = 
C. P = k
D. P = ks3
Write the equation of the line in slope-intercept form.
A. y = x + 2
B. y = 
x - 5
C. y = -5x - 5
D. y = 
x + 2
Solve the problem.Marty's Tee Shirt & Jacket Company is to produce a new line of jackets with an embroidery of a Great Pyrenees dog on the front. There are fixed costs of $610 to set up for production, and variable costs of $30 per jacket. Write an equation that can be used to determine the total cost, C(x), encountered by Marty's Company in producing x jackets.
A. C(x) = 610 + 30x B. C(x) = 610 - 30x C. C(x) = (610 + 30) x D. C(x) = 610x + 30
Use the two-stage method to solve.Maximizez = 12x1 + 15x2subject to:x1 + x2 = 10 3x1 + 3x2 ? 36 4x1 + 2x2 ? 18 x1 ? 0, x2 ? 0
A. Maximum is 147 for x1 = 1, x2 = 9 B. Maximum is 144 for x1 = 2, x2 = 8 C. Maximum is 120 for x1 = 10, x2 = 0 D. Maximum is 150 for x1 = 0, x2 = 10